Primarchs... Demigods created on the basis of the gene code of the Master of Humanity himself. Generals. Conquerors. Commanders of the Space Marine legions. These scions of the Emperor, endowed with unparalleled power, were supposed to lead humanity into a new era of greatness, but civil war divided them into two hostile camps. Some, like the stoic Rogal Dorn and the exalted Sanguinius, remained faithful to their father's dream. Others - such as the bloodthirsty Konrad Kurtz and the unwavering Mortarion - turned from His light and followed their brother Horus into the darkness of rebellion. The anthology collects eight stories about these unique creatures, dating back to both the glorious days of the Great Crusade and the time before the Siege of Terra.